2009/04/30 by Rachel A. Rampy, David M. Smith, Ignacio Negueruela · 3 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #astro-ph.HE #astro-ph.SR
paper · pdf · doi:10.1088/0004-637x/707/1/243
published as Astrophys.J.707:243-249,2009 · 14 pages, 8 figures, accepted for The Astrophysical Journal. Version 3 includes minor changes made during the refereeing process: primarily an assortment of references to results appearing since the original submission, but also a new spectral fit (Figure 8)
arxiv created 2009/10/16 · openalex publication_date 2009/11/19 · arxiv updated 2011/02/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
We present direct evidence for dense clumps of matter in the companion wind in a Supergiant Fast X-ray Transient (SFXT) binary. This is seen as a brief period of enhanced absorption during one of the bright, fast flares that distinguish these systems. The object under study was IGR J17544−2619, and a total of 236 ks of data were accumulated with the Japanese satellite Suzaku . The activity in this period spans a dynamic range of almost 10 4 in luminosity and gives a detailed look at SFXT behavior.